examples/igloo2/example.v

   1 module example (
   2         input  clk,
   3         input  SW1,
   4         input  SW2,
   5         output LED1,
   6         output LED2,
   7         output LED3,
   8         output LED4
   9 );
  10
  11         localparam BITS = 4;
  12         localparam LOG2DELAY = 22;
  13
  14         reg [BITS+LOG2DELAY-1:0] counter = 0;
  15         reg [BITS-1:0] outcnt;
  16
  17         always @(posedge clk) begin
  18                 counter <= counter + SW1 + SW2 + 1;
  19                 outcnt <= counter >> LOG2DELAY;
  20         end
  21
  22         assign {LED1, LED2, LED3, LED4} = outcnt ^ (outcnt >> 1);
  23 endmodule